Presentation on theme: "Lesson 1.1- Variables and Expressions, pg. 6"— Presentation transcript:
1 Lesson 1.1- Variables and Expressions, pg. 6 Objective:To write mathematical expressions for verbal expressions and vice versa.
2 VocabularyVariables: symbols used to represent unspecified numbers or values.Algebraic expressions: consists of one or more numbers and variables along with one or more arithmetic operations.
3 Factors: quantities being multiplied. Product: the result of multiplication.5 × 8 = 40Power: an expression like xn, and is read “x to the nth power.”xnproductFactorsexponentbase
4 Base: number being used as a factor. Exponent: indicates the number of times the base is used as a factor.43= 4×4×4 =64Evaluate: find the value.
5 Key Words for Basic Operations Add Subtract Multiply DivideSum Minus Times QuotientPlus Less than Product Divided byIncrease Decrease TwiceMore than differenceSquared- raise a number to the 2nd powerCubed- raise a number to the 3rd power
6 Ex. 1: Write an algebraic expression for each verbal expression. Five less than a number cc - 52. 9 plus the product of 2 and the number d9 + 2dThree eighths of the original volume v⅜v
7 Ex. 2: Write each expression algebraically. The product of ¾ and a to the seventh power.¾a7The sum of 11 and x to the third power.11 + x³
9 Ex. 4: Write a verbal expression for each algebraic expression. 1.2.
10 A bakery sells a dozen bagels for $8. 50 and a dozen donuts for $3. 99 A bakery sells a dozen bagels for $8.50 and a dozen donuts for $3.99. Write and expression for the cost of buying b dozens of bagels and d dozen of donuts.NBA #1, pg. 8, problems even